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Features

The Determination of Stellar Distances

Ways in which our Knowledge is Being Extended

By F. W. Dyson

Backing Photographic Plates

Four-Cycle versus Two-Cycle Diesel Engines

Are you Collecting Sphagnum

A Sort of Moss of Great Value for Surgical Dressings

By George E. Nichols

When the Dog Goes to War

Cork Slabs from Cork Waste

Mechanical Cavalry

The Tanks That Have Revolutionized Methods of Assault

Die-Casting of Aluminium-Bronze

By H. Rix and H. Whitaker

A Nursery of Broken Ships

Uvachromie, a New Method of Producing Colored Photographs

The Zeppelin Biplane— I

A Description of a Monster German Bombing Machine of Recent Construction

By Jean Lagorgette

Light Emission of Gases and Gas Mixtures by Electric Discharges

Probable Number of Nebulæ

Respiratory Diseases in the Army

Synthetic Gasoline by Electrochemical Means

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    November 16, 1918

    Think Outside the Gift Box